Measurements:
°C
°F
CURRENT WEATHER
00:35
Key West
80°F
SW 25 mph
Feels like: 84°F
Precip: 9%
World Resorts USA Key West Weather

7 Day Weather Forecast

10.27
tue
DAY
80°F
SW 22 mph
precip
10%
NIGHT
80°F
S 25 mph
precip
9%
10.28
wed
DAY
82°F
S 15 mph
precip
36%
NIGHT
82°F
SW 8 mph
precip
10%
10.29
thu
DAY
84°F
NE 2 mph
precip
21%
NIGHT
84°F
W 10 mph
precip
29%
10.30
fri
DAY
82°F
W 11 mph
precip
10%
NIGHT
82°F
W 14 mph
precip
10%
10.31
sat
DAY
82°F
W 12 mph
precip
9%
NIGHT
84°F
W 11 mph
precip
21%
11.01
sun
DAY
84°F
W 6 mph
precip
18%
NIGHT
82°F
SW 6 mph
precip
19%
11.02
mon
DAY
82°F
SW 5 mph
precip
19%
NIGHT
82°F
SW 6 mph
precip
20%

Key West Sea Water Temperature in October, °F

Select Year: 2026 2025 2024

The average sea surface temperature in October 2026 for Key West was 29.1°F. The maximum and minimum values were 26.5°F and 30.1°F respectively.

Key West on the Weather Map

Best Time to Visit Key West
The most sunny months:
May 17 days
March 16 days
April 16 days
The most warm months:
August 91.5 °F
July 91.0 °F
September 89.6 °F
Warmest sea temperature:
August 91.4 °F
July 90.8 °F
September 90.2 °F
The most cold months:
January 74.4 °F
February 76.3 °F
December 78.2 °F
The most rainy months:
June 7 days
August 7 days
September 6 days
The most windy months:
November 14 mph
December 14 mph
January 14 mph
more details